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MPI support on core i5 750

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February 8, 2011 1:12:20 PM

I was trying to paralellize some math code (using freefem++) and after installing the MPI package and the MPI-compliant version of the software I ran the "mpisize" command, to my surprize, the answer came 0, meaning the system recognizes only one core in my quad core cpu.

I was wondering if this means that MPI only recognizes physical processors (as opposed to cores in each processor) or if I made a mistake during the installation of the mpi package or something.

Any help is appreciated.


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My Specs:
Core i5 750 @ 3.8GHz (181x21.0)
Asus P7P55D PRO
4 GB RAM
Geforce GTX275
Windows 7 Proffessional 64-bit
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Software I installed:
Freefem++3.12 (http://www.freefem.org/ff++/ftp//FreeFem++-3.12.exe)
MPICH2 32-bit (http://www.mcs.anl.gov/research/projects/mpich2/downloa...)
MPICH2 64-bit (http://www.mcs.anl.gov/research/projects/mpich2/downloa...)

More about : mpi support core 750

February 9, 2011 11:55:57 PM

Seems I asked a hard one xD

Anyway, thanks for reading!
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a c 145 à CPUs
February 10, 2011 12:19:46 AM

MPI is a communication protocol meant to 'sync' cluster like processing. Like muliple computers working on the same job. Have you checked into freefem Posix? I beleive thats the multi-threading stuff.
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February 14, 2011 10:13:59 PM

popatim said:
MPI is a communication protocol meant to 'sync' cluster like processing. Like muliple computers working on the same job. Have you checked into freefem Posix? I beleive thats the multi-threading stuff.


Could you provide a link to some documentation or something like that, I searched for it on google and the freefem website, but couldn't find anything
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a c 145 à CPUs
February 15, 2011 12:19:26 AM

I beleive its freefem.org though I haven't used that stuff in a long time.
I just checked , the sie is still there. I hope I steered you in the right direction.
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